High on fat, low on evidence: the problem with the keto diet
... is predominantly made up of high-fat foods , including butter, oils, meat, fish, eggs and cheese, and very low-carb vegetables such as cauliflower and leafy greens.
This forces the body to burn fat for fuel, rather than glucose. In order to maintain that state, known as ketosis, followers typically restrict their carbohydrate intake to less than 50g a day.
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Keto was developed as a clinical tool.
In 1911, doctors noticed that children with epilepsy stopped having seizures after 2 days of absolute fasting, when their bodies would have been forced into ketosis.
Scientists later noted that ketosis could be achieved through a low-carb, high-fat (LCHF) diet without the risk of infection and mortality rates associated with absolute fasting
Most newcomers are drawn to keto for its potential weight loss benefits, and, while it remains a topic of debate among nutritional scientists, its proponents typically gloss over the unknowns.
The real driving force behind keto’s popularity is our myopic focus on weight as the sole determinant of health.
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Doctors have been prescribing ketogenic diets to treat epilepsy for nearly a century, and increasingly believe it holds promise for people with Type 2 diabetes.
But the older keto regi...
It supplies energy under circumstances such as fasting or caloric restriction to certain organs (e.g. the brain, heart, and skeletal muscle).
In ketogenesis, our livers start to break down fat into a usable energy source called ketones. Ketones can stand in for glucose as fuel for the body when there’s a glucose shortage.
Once ketogenesis kicks in and ketone levels are elevated, the body is in a state called “ketosis,” during which it’s burning stored fat.
That means eating mainly meats, eggs, cheese, fish, nuts, butter, oils, and vegetables while avoiding sugar, bread and other grains, beans, and even fruit.
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The keto diet is primarily used to help reduce the frequency of epileptic seizures in children. While it also has been tried for weight loss, only short-term results have been studied, and t...
Unlike other low-carb diets, which focus on protein, a keto plan centers on fat, which supplies as much as 90% of daily calories. The keto diet aims to force your body into using a different type of fuel. Instead of relying on sugar (glucose) that comes from carbohydrates (such as grains, legumes, vegetables, and fruits), the keto diet relies on ketone bodies, a type of fuel that the liver produces from stored fat.
Followers must eat fat at each meal:
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